<?php

declare(strict_types = 1);

/**
 * This file is part of the 'Yasumi' package.
 *
 * The easy PHP Library for calculating holidays.
 *
 * Copyright (c) 2015 - 2025 AzuyaLabs
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @author Sacha Telgenhof <me at sachatelgenhof dot com>
 */

namespace Yasumi\tests\Finland;

use Yasumi\Holiday;
use Yasumi\tests\HolidayTestCase;
use Yasumi\Yasumi;

/**
 * Class for testing St. John's Day / Midsummer's Day in Finland.
 *
 * Since 1955, the holiday has always been on a Saturday (between June 20 and June 26). Earlier it was always on
 * June 24.
 */
class stJohnsDayTest extends FinlandBaseTestCase implements HolidayTestCase
{
    /**
     * The year in which the holiday was adjusted.
     */
    public const ADJUSTMENT_YEAR = 1955;

    /**
     * The name of the holiday to be tested.
     */
    public const HOLIDAY = 'stJohnsDay';

    /**
     * Tests the holiday before it was adjusted.
     *
     * @throws \Exception
     */
    public function testHolidayBeforeAdjustment(): void
    {
        $year = 1944;
        $this->assertHoliday(
            self::REGION,
            self::HOLIDAY,
            $year,
            new \DateTime("{$year}-6-24", new \DateTimeZone(self::TIMEZONE))
        );
    }

    /**
     * Tests the holiday before it was adjusted.
     *
     * @throws \Exception
     */
    public function testHolidayAfterAdjustment(): void
    {
        $year = $this->generateRandomYear(self::ADJUSTMENT_YEAR);

        $holidays = Yasumi::create(self::REGION, $year);
        $holiday = $holidays->getHoliday(self::HOLIDAY);

        // Some basic assertions
        self::assertInstanceOf(Holiday::class, $holiday);
        self::assertNotNull($holiday);

        // Holiday specific assertions
        self::assertEquals('Saturday', $holiday->format('l'));
        self::assertGreaterThanOrEqual(20, $holiday->format('j'));
        self::assertLessThanOrEqual(26, $holiday->format('j'));

        unset($holiday, $holidays);
    }

    /**
     * Tests the translated name of the holiday defined in this test.
     *
     * @throws \Exception
     */
    public function testTranslation(): void
    {
        $this->assertTranslatedHolidayName(
            self::REGION,
            self::HOLIDAY,
            $this->generateRandomYear(),
            [self::LOCALE => 'Juhannuspäivä']
        );
    }

    /**
     * Tests type of the holiday defined in this test.
     *
     * @throws \Exception
     */
    public function testHolidayType(): void
    {
        $this->assertHolidayType(self::REGION, self::HOLIDAY, $this->generateRandomYear(), Holiday::TYPE_OFFICIAL);
    }
}
